Reduction of terphenyl iron(ii) or cobalt(ii) halides in the presence of trimethylphosphine: an unusual triple dehydrogenation of an alkyl group

2009 ◽  
pp. 5401 ◽  
Author(s):  
Chengbao Ni ◽  
Bobby D. Ellis ◽  
Troy A. Stich ◽  
James C. Fettinger ◽  
Gary J. Long ◽  
...  
Keyword(s):  
Alkyl Group

Metal-Metal Cooperative Bond Activation by Heterobimetallic Alkyl, Aryl, and Acetylide PtII/CuI Complexes

2020 ◽  
Author(s):  
Shubham Deolka ◽  
Orestes Rivada Wheelaghan ◽  
Sandra Aristizábal ◽  
Robert Fayzullin ◽  
Shrinwantu Pal ◽  
...  
Keyword(s):  
Alkyl Group ◽  
Bond Activation ◽  
Bond Cleavage ◽  
Terminal Alkyne ◽  
Alkyl Aryl ◽  
Metal Metal ◽  
The Stability ◽  
Selective Formation ◽  
Organoplatinum Compounds

We report selective formation of heterobimetallic PtII/CuI complexes that demonstrate how facile bond activation processes can be achieved by altering reactivity of common organoplatinum compounds through their interaction with another metal center. The interaction of the Cu center with Pt center and with a Pt-bound alkyl group increases the stability of PtMe2 towards undesired rollover cyclometalation. The presence of the CuI center also enables facile transmetalation from electron-deficient tetraarylborate [B(ArF)4]- anion and mild C-H bond cleavage of a terminal alkyne, which was not observed in the absence of an electrophilic Cu center. The DFT study indicates that the role of Cu center acts as a binding site for alkyne substrate, while activating its terminal C-H bond.

scholarly journals MW irradiation and ionic liquids as green tools in hydrolyses and alcoholyses

2020 ◽  
Vol 10 (1) ◽  
pp. 001-010 ◽  
Author(s):  
Nikoletta Harsági ◽  
Betti Szőllősi ◽  
Nóra Zsuzsa Kiss ◽  
György Keglevich
Keyword(s):  
Ionic Liquids ◽  
Alkaline Hydrolysis ◽  
Alkyl Group ◽  
Phosphinic Acid ◽  
Reaction Times ◽  
Alternative Possibility ◽  
First Order ◽  
Pseudo First Order ◽  
Mw Irradiation ◽  
Hydrolysis Of

Abstract The optimized HCl-catalyzed hydrolysis of alkyl diphenylphosphinates is described. The reaction times and pseudo-first-order rate constants suggested the iPr > Me > Et ∼ Pr ∼ Bu order of reactivity in respect of the alkyl group of the phosphinates. The MW-assisted p-toluenesulfonic acid (PTSA)-catalyzed variation means a better alternative possibility due to the shorter reaction times, and the alkaline hydrolysis is another option. The transesterification of alkyl diphenylphosphinates took place only in the presence of suitable ionic liquids, such as butyl-methylimidazolium hexafluorophosphorate ([bmim][PF6]) and butyl-methylimidazolium tetrafluoroborate ([bmim][BF4]). The application of ethyl-methylimidazolium hydrosulfate ([emim][HSO4]) and butyl-methylimidazolium chloride ([bmim][Cl]) was not too efficient, as the formation of the ester was accompanied by the fission of the O–C bond resulting in the formation of Ph2P(O)OH. This surprising transformation may be utilized in the phosphinate → phosphinic acid conversion.

Alkyl group-tagged ruthenium indenylidene complexes: Synthesis, characterization and metathesis activity

2015 ◽  
Vol 791 ◽  
pp. 148-154 ◽  
Author(s):  
Baoyi Yu ◽  
Fatma B. Hamad ◽  
Karen Leus ◽  
Alex A. Lyapkov ◽  
Kristof Van Hecke ◽  
...  
Keyword(s):  
Alkyl Group

Catalytic alkyl group exchange reaction of primary and secondary amines

1983 ◽  
Vol 105 (15) ◽  
pp. 5002-5011 ◽  
Author(s):  
Shunichi Murahashi ◽  
Noriaki Yoshimura ◽  
Tatsuo Tsumiyama ◽  
Takeyuki Kojima
Keyword(s):  
Exchange Reaction ◽  
Alkyl Group ◽  
Secondary Amines ◽  
Primary And Secondary Amines

scholarly journals The Fluorescence Quenching of Zinc Porphyrins with the ω-[4-(4-Pyridyl)pyridinio]alkyl Group

1989 ◽  
Vol 62 (10) ◽  
pp. 3069-3074 ◽  
Author(s):  
Kohshin Takahashi ◽  
Tetsuo Terashima ◽  
Teruhisa Komura ◽  
Hiroto Imanaga
Keyword(s):  
Fluorescence Quenching ◽  
Alkyl Group ◽  
Zinc Porphyrins

Alkylation of dienamines. mechanism of N to C alkyl group transfer

1972 ◽  
Vol 13 (20) ◽  
pp. 1997-2000 ◽  
Author(s):  
U.K. Pandit ◽  
W.A. Zwart Voorspuij ◽  
P. Houdewind
Keyword(s):  
Alkyl Group ◽  
Group Transfer

Effect of Alkyl Group Size on the Mechanism of Acid Hydrolyses of Benzaldehyde Acetals

2003 ◽  
Vol 68 (3) ◽  
pp. 706-717 ◽  
Author(s):  
Alexanders T. N. Belarmino ◽  
Sandro Froehner ◽  
Dino Zanette ◽  
João P. S. Farah ◽  
Clifford A. Bunton ◽  
...  
Keyword(s):  
Group Size ◽  
Alkyl Group
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